I found that the wikimedia Commons compared to Compfight and Flickr is kinda outmatched. I searched a couple of things, like an image of a laptop and some animals, and I found that the photos on Flickr and Compfight are much better quality and there are much more than the wikimedia. So in summary Compfight and Flickr are much better for Creative Commons photos than wikimedia, but hey if you need another to site to look for CC photos, then try it. But mind you this is just my opinion.

Yes. You are free to report the facts and ideas embodied in another person’s article or web page. Copyright only protects the expression — the combination of words and structure that expresses the factual information — not the facts themselves. – Intellectual Property

Well, what does this bunch of words mean? It means that you can report facts and ideas from other peoples articles, blogs and web pages. The copyright only protects the way the words are placed, So if I copyrighted The sun is a star, you could say that the sun is a large burning ball of fire known as a star.